What We Audit in Ethereum-Based Smart Contracts
We protect your DeFi project from top to bottom with a deep Ethereum smart contract audit. Our team checks your core rules, how you handle updates, and how you connect to other apps to stop serious bugs before they happen.
Smart contract architectureDesign patterns
Business logicEconomic models
Token mechanismsPermission control
Upgradeability and proxygovernance modules
Integration with oracles, bridges, and DeFi protocols
Testing coverage and deploymentOperational securityFirst, we look at your finished code and project plans to decide exactly what to check. We will give you a fair price based on how much work your Ethereum smart contract audit needs. We can also sign a privacy paper (NDA) to keep your secrets safe.
Set the Goal & Get a Quote
First, we look at your finished code and project plans to decide exactly what to check. We will give you a fair price based on how much work your Ethereum smart contract audit needs. We can also sign a privacy paper (NDA) to keep your secrets safe.
Agree on Details & Picking Dates
We will talk about the cost and how to pay. Then, we set a clear calendar for your Ethereum smart contract audit so you know exactly when we start and when we finish.
Finding Bugs & Fixing Problems
Our team uses powerful tools and manual checks to find every security risk in your code. We share what we find with you, help you fix it, and then check the new code again. For big projects, we might do this several times to be sure it is perfect.
Receive Your Final Safety Report
You will get an official, signed report for your Ethereum smart contract audit. It lists all the risks we found and gives you clear steps on how to fix them to keep your users safe.
Ethereum Smart Contract Audit Advantages
We mix expert knowledge with our own special tools to make sure your Ethereum code is safe and works exactly as planned.
Audit Reports
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Hear from Our Customers
“BlockSec has shown remarkable professionalism in smart contract audits. Their expertise in blockchain and smart contract technology, along with a meticulous approach, ensures thorough identification and resolution of security risks. We highly commend their professionalism and anticipate continued collaboration.”
“It's been a fantastic experience collaborating with BlockSec. You have shown your professionalism in the audit field, especially on the smart contract side.”
“With a keen eye for detail, the team identify potential vulnerabilities and provide robust solutions, ensuring our contracts are secure and optimized. For anyone in need of expert smart contract auditing, I cannot recommend BlockSec highly enough.”
“The BlockSec team is very knowledgeable, punctual, responsive, and diligent during the entire audit process. We highly recommend BlockSec for any smart contract protocols who are seeking great value for money in the audit field.”
“I want to extend my sincerest appreciation to BlockSec for conducting a thorough audit of the Stratos project. Their meticulous approach and insightful feedback have significantly contributed to enhancing our project's security and reliability.”
“It's also worthwhile to look into trustworthy auditing companies like @BlockSecTeam. Such audit reports are a gold mine of knowledge ⛏️🕯️”
Why Organizations Choose BlockSec
Total System Protection
We audit your entire project stack, from smart contracts and blockchain code to wallets and off-chain websites.
Real-Time Hack Blocking
We go beyond audits by offering tools (like Phalcon Security) that can actively stop a hack when it happens to save your funds.
Battle-Tested Experience
We have a proven track record of saving projects from massive losses and discovering critical bugs in major protocols before bad guys do.
Support Beyond the Audit
We don't leave you after the report is delivered. Instead, we help you fix issues, verify the changes, and monitor your project after launch.
Frequently Asked Questions
Top 10 "Awesome" Security Incidents in 2025
To help the community learn from what happened, BlockSec selected ten incidents that stood out most this year. These cases were chosen not only for the scale of loss, but also for the distinct techniques involved, the unexpected twists in execution, and the new or underexplored attack surfaces they revealed.
Newsletter - December 2025
In December 2025, the DeFi sector encountered three significant security incidents, resulting in total losses of approximately $19.7 million. Yearn Finance faced nearly $10 million in losses due to vulnerabilities in its yETH pool and legacy contracts. Trust Wallet suffered a malicious backdoor attack on its Chrome extension, leading to losses of about $7 million. Ribbon Finance experienced a loss of $2.7 million due to improper access controls.
Web3 Smart Contract & EVM Chain Audits | BlockSec
BlockSec secures Web3 with attacker-driven audits, chain reviews, and zero-day detection - battle-tested, blocking 20+ hacks and $20M+ losses.
